CVE-2026-90341 Linux kernel firmware coreboot - Memory Bounds Validation

Linux kernel firmware coreboot contains a memory bounds validation vulnerability caused by improper size and header checks in coreboot_table_probe, letting attackers cause out-of-bounds memory mapping, exploit requires crafted firmware tables.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.19% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Memory Bounds Validation
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with coreboot table bounds validation fixes.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs